My old stuff :)

Have several old computers Im trying to fix up with the goal of 2 fairly quick 32bit Win7 Home Premium machines with decent video that doesnt stop and buffer while watching. Also that have good wireless connection for printer and internet as well as ethernet for cable modem. Along the way Id like to learn abit and already have some. What Im working on right now is trying to resucitate my 2005 HP DX2000 P4 3.0E which was left on for several years and eventually crashed I believe as I was trying to upgrade memory a second time. I had added 3 512 for a total of 2 GB and then bought 4 1GB sticks to max it at its stated 4GB capacity. I got 5 red flashes from the BIOS beep code which per HP literature on DX 2000 is "no memory installed". After trying various memory combinations and continuing to get the same code HP said "replace the system board". Replaced the original 351067-001 Rev D01 mobo with a 351067-001 Rev E01 and found the power button umbilical connector to be different. I could not get to post but dont remember the indication I think the same 5 flashes. Bought a brand new D02 mobo and just installed to get 5 flashes with the 4 1GB sticks, then 2 512 GB sticks. Removed 1 of the 512 sticks and now have 10 red flashes then yellow flash and shutdown. Fans all turn but not real fast, ps fan pretty cruddy. Had seen a reference of 10 beeps for fan failure .... previously the 5 flashes had recurred ... whatever BIOS test is failing it is now shutting power down after one "flash" session. This week will try testing the p/s .... actually ordered a tested clean one (16$) replace the CMOS battery and maybe a tech friend will lend me another P4 processor to try. Was thinking p/s might be marginal enough to not completely power the full boat of memory or turn the fans fast enough to stop a POST failure. Had also read there is high density and low density pc3200 ddr 1gb sticks and that high density wont run in many computers. Supposedly same amount of chips on both sides of the sticks and cant find any 64 or 128 nomenclature on them. My sticks have the correct HP pn on attached stickers so doubtful thats the problem but I would like to know how to visually identify. Any input appreciated. Thanks Keith